The cliffs owing Pays-de-Caux could be a rampart versus the assaults of sea . Despite appearances , there n'est nothing . They undergo continual erosion that causes d'incessants landslides . He is frequent , as out and measuring their recoil , only roads , houses , trees , pastures , fields of cropping , fall has the sea . These cliffs are streaming d'ocres , d'ombres and of lights .